Composite sheet and absorbent article using the composite sheet

a composite sheet and absorbent material technology, applied in the field of composite sheets, can solve problems such as difficulty in suppressing rewetting, and achieve the effect of superior liquid drawing ability (spot property) and superior ability to suppress backs

Inactive Publication Date: 2012-09-25
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]The present invention can provide an absorbent article provided with a composite sheet having superior liquid drawing ability (spot property) in a predetermined spot (position) and superior ability to suppress backset of a discharged matter such as menstrual blood, once absorbed by an absorbent core (rewet suppressing ability), and includes a film sheet and a fiber aggregate.

Problems solved by technology

However, has been difficult to suppress rewet, in other words, backset of a discharged matter such as menstrual blood once absorbed by an absorbent body, in a case where a large amount of discharged matter such as menstrual blood was discharged.

Method used

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  • Composite sheet and absorbent article using the composite sheet
  • Composite sheet and absorbent article using the composite sheet
  • Composite sheet and absorbent article using the composite sheet

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

2.1. First Embodiment

2.1.1. Overall Configuration

[0067]A composite sheet 10A according to a first embodiment is described hereinafter with reference to FIGS. 2 and 3. As shown in FIG. 2, the composite sheet 10A includes a film sheet 11 on which a plurality of openings 110 is formed, and a fiber aggregate 13 that is disposed to be layered on one side of the film sheet 11. A portion of the fiber aggregate 13 has a plurality of projecting regions 15 that project to another side of the film sheet 11 through the plurality of openings 110. A film sheet on which the openings 110 are formed in advance can be used as the film sheet 11 for the composite sheet.

[0068]The projecting regions 15 on the composite sheet 10 can have a height (length in a thickness direction) of 0.3 to 5.0 mm, and more particularly of 0.5 to 2.0 mm. In addition, the projecting regions 15 can have a length in a planar direction (width or diameter) of 0.5 to 10 mm, and more particularly of 1.0 to 5.0 mm. Furthermore, a ...

second embodiment

2.2. Second Embodiment

2.2.1. Overall Configuration

[0092]A composite sheet 10B according to a second embodiment is described hereinafter with reference to FIGS. 4 and 5. Unlike the composite sheet 10A according to the first embodiment, a film sheet 11, on which openings 110 are not formed in advance, is used in the composite sheet 10B according to the present embodiment. In other words, in the present embodiment, projecting portions 15 are formed while forming slits by splitting portions of the film sheet 11, in the projecting region forming step.

[0093]More specifically, as shown in FIG. 4 or 5, the composite sheet 10B according to the present embodiment is a composite sheet that includes the film sheet 11 and the fiber aggregate 13, the film sheet 11 having a plurality of slits 120 formed therein, and the fiber aggregate 13 being disposed to be layered on one side of the film sheet 11 and having a plurality of projecting regions 15 projecting toward another side of the film sheet 11...

third embodiment

2.3. Third Embodiment

2.3.1. Overall Configuration

[0110]A composite sheet 10C according to a third embodiment is described hereinafter with reference to FIGS. 6 to 9. The composite sheet 10C according to the present embodiment is a composite sheet in which the projecting regions 15 are formed at smaller intervals in the width direction than in the composite sheet 10B according to the second embodiment.

[0111]More specifically, as shown in FIGS. 6 to 9, the composite sheet 10C according to the present embodiment is a composite sheet that includes the film sheet 11 and the fiber aggregate 13, the film sheet 11 having a plurality of slits 120 formed therein, and the fiber aggregate 13 being disposed to be layered on one side of the film sheet 11 and having a plurality of projecting regions 15 projecting toward another side of the film sheet 11, which are a part of the fiber aggregate 13 passing through the plurality of slits 120.

[0112]The film sheet 11 in the composite sheet 10C is dispo...

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Abstract

It is intended to provide an absorbent article provided with a composite sheet which comprises a film sheet and a fiber mass and is excellent in the ability to draw in a liquid and the ability to prevent the backward flow. Namely, an absorbent article provided with a composite sheet comprising a film sheet having multiple pores formed therein and a fiber mass laminated on one side of the film sheet, wherein the fiber mass has a projected section in which a part of the fiber mass projects through the multiple pores toward the other side of the film sheet.

Description

RELATED APPLICATIONS[0001]The present application is based on International Application Number PCT / JP2007 / 073870, filed Dec. 11, 2007, and claims priority from Japanese Application Number 2006-334243, filed Dec. 12, 2006, the disclosures of which are hereby incorporated by reference herein in their entirety.TECHNICAL FIELD[0002]The present invention relates to a composite sheet in which a film sheet and a fiber aggregate are disposed to be layered.BACKGROUND ART[0003]Conventionally, improvements have been made for a shape and the like of a top sheet and a second sheet for an absorbent article such as a sanitary napkin, in order to appropriately transfer a discharged matter such as menstrual blood to an absorbent core. An example of such a sheet includes: a sheet having improved liquid drawing abilities (spot property) in a predetermined spot (position) by a plurality of fine openings, and a sheet having improved liquid drawing abilities by capillary action realized by adjusting fibe...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61F13/15
CPCA61F13/4756A61F13/512A61F13/53747B32B3/28B32B5/06B32B3/266A61F2013/53778A61F2013/53782Y10T428/24339Y10T156/1041Y10T428/24314B32B5/022B32B5/028B32B27/12B32B27/18B32B27/32B32B3/30B32B2255/02B32B2262/0253B32B2262/0276B32B2307/516B32B2307/726B32B2555/00B32B7/05A61F13/53
Inventor NODA, YUKIKURODA, KENICHIRO
Owner UNI CHARM CORP
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